India Pledges Greener Growth, With Help From Richer Nations

NEW DELHI—India on Friday pledged to ramp up its use of renewable energy and slow the growth of its greenhouse-gas emissions, but said more prosperous countries must share the costs emerging economies will have to shoulder to develop in a more environmentally friendly way.

The pledge—that India would raise its proportion of electricity generated using non-fossil fuels to 40% of the total in the next 15 years—was part of its submission to the United Nations late Thursday, the deadline for national plans as countries prepare...